Abstract: An endoscope apparatus includes a flash memory that stores a reference value of a color balance adjustment value of an endoscopic image of an endoscope that picks up an object through a polarizer. The endoscope calculates, from the reference value and the color balance adjustment value of the endoscope after elapse of a predetermined time period, an amount of change in the color balance adjustment value; judges whether or not the calculated amount of change is equal to or larger than a predetermined threshold; and, when the amount of change is equal to or larger than the predetermined threshold, outputs a predetermined output.

Abstract: An endoscope system includes a light source device, a CCD, a video processor, and an observation monitor, wherein the video processor includes: a band decomposition processing section that performs a decomposition processing for decomposing into a plurality of spatial frequency bands on a signal of an image picked up by the CCD, to generate a plurality of band images; an enhancement processing section that performs an enhancement processing on selected band images based on an enhancement amount set for a region where an observation target in a subject is distributed in a feature space formed with wavelength bands or spatial frequency bands of the band images selected among the plurality of band images as axes; and an image generation section that integrates the plurality of band images subjected to the color conversion processing, for each wavelength image, to generate an image.

Abstract: An endoscope apparatus includes a light source apparatus, and a light-adjusting circuit. The light-adjusting circuit, based on a first image signal with a first wavelength band having a peak wavelength of a spectral characteristic and a second image signal with a second wavelength band having a peak wavelength of a spectral characteristic providing a value lower than that of the first image signal in the absorption characteristic and providing a suppressed scattering characteristic of the body tissue between a wavelength band providing a maximal value and a wavelength band for a minimal value in an absorption characteristic of a body tissue of a subject, provides a weight larger than that of the second image signal to the first image signal to calculate a light adjustment signal for adjusting a light amount in a light source apparatus and outputs the light adjustment signal.

Abstract: An endoscope apparatus includes an image pickup section equipped with a color separation section that picks up an image of returning light from a subject illuminated by an illumination section, an emphasis processing section that performs emphasis processing on sharpness of an image signal generated from the output signal of the image pickup section and a storage section that stores information for modifying processing contents of the emphasis processing, wherein the storage section stores information for setting image signals to be subjected to emphasis processing in first and second observation modes in which images are picked up under illumination of white light and narrow band light respectively to a luminance signal and a color difference signal, and the emphasis processing section performs emphasis processing on the luminance signal with a greater emphasis characteristic than the color difference signal over an entire frequency domain.

Abstract: The present invention provides a polyolefin resin composition with sufficient flame retardancy to pass UL94 5VA without using a halogen flame retarding agent that produces harmful gas during combustion, and specifically provides a flame retardant polyolefin resin composition containing, as flame retardant components of the polyolefin resin, (A) a (poly)phosphoric acid compound expressed by general formula (1) and (B) a (poly)phosphate compound expressed by general formula (3), and preferably (C) zinc oxide and (D) a drip preventing agent, and that satisfies UL94 5VA. Note that the details of general formula (1) and general formula (3) are as disclosed in the specification.

Abstract: An endoscope apparatus includes a flash memory that stores a reference value of a color balance adjustment value of an endoscopic image of an endoscope that picks up an object through a polarizer. The endoscope calculates, from the reference value and the color balance adjustment value of the endoscope after elapse of a predetermined time period, an amount of change in the color balance adjustment value; judges whether or not the calculated amount of change is equal to or larger than a predetermined threshold; and, when the amount of change is equal to or larger than the predetermined threshold, outputs a predetermined output.

Abstract: A band-limiting filter of the invention exhibits a trimodal filter characteristic, and includes, for example, band-limiting transmittance filter characteristic portions Rb, Gb, and Bb for wavelength regions of red, green, and blue, respectively. More specifically, the band-limiting transmittance filter characteristic portions Rb, Gb, and Bb, for example, have bandpass characteristics in which the respective center wavelengths are 630 nm (full width at half maximum ?1=30 to 90 nm), 540 nm (full width at half maximum ?2=20 to 60 nm), and 440 nm (full width at half maximum ?3=50 to 80 nm). This makes it possible to obtain an image of a predetermined color tone by restraining an influence of spectral sensitivity characteristic of an image pickup device when the band-limiting filter is applied to a synchronous type endoscope for performing color image pickup to perform observation under normal illumination light.

Abstract: In a method of reducing corrosion of a material constituting a nuclear reactor structure, an electrochemical corrosion potential is controlled by injecting a solution or a suspension containing a substance generating an excitation current by an action of at least one of radiation, light, and heat existing in a nuclear reactor, or a metal or a metallic compound forming the substance generating the excitation current under the condition in the nuclear reactor to allow the substance generating the excitation current to adhere to the surface of the nuclear reactor structural material, and by injecting hydrogen in cooling water of the nuclear reactor while controlling the hydrogen concentration in a feed water.

Abstract: In a nuclear power plant, a corrosion-resistant oxide film on a surface of the metal component of a reactor structure is exposed to a high-temperature water, the corrosion-resistant oxide film containing an oxide having a property of a P-type semiconductor, and a catalytic substance having a property of an N-type semiconductor is deposited on the oxide film. The oxide film maintains the property of the P-type semiconductor.

Abstract: An intermediate member includes: a base section including a fixing portion provided on a circuit board along the outer periphery of a switch section, and a cylindrical held portion formed integrally with the upper end of the fixing portion; a operator portion operable to drive the switch section; and a resilient connection portion resiliently connecting the operator portion to the base section. A panel member and the circuit board are fixed in face-to-face pressed engagement with each other with the intermediate member sandwiched therebetween. The operator portion is partly exposed out of an opening portion formed in the panel member, the held portion is held fitted with a cylindrical holding portion provided on the lower surface of the panel member, and the fixing portion is sandwiched between the lower end of the holding portion and the upper surface of the circuit board.

Abstract: In a nuclear power plant, a corrosion-resistant oxide film on a surface of the metal component of a reactor structure is exposed to a high-temperature water, the corrosion-resistant oxide film containing an oxide having a property of a P-type semiconductor, and a catalytic substance having a property of an N-type semiconductor is deposited on the oxide film. The oxide film maintains the property of the P-type semiconductor.

Abstract: In an endoscope apparatus, a first color separation section separates an image picked up by an image pickup section into a first luminance signal and a first color difference signal, then a first color conversion section and a second color separation section convert the first luminance signal and the first color difference signal to first three primary color signals and second three primary color signals respectively, a signal intensity ratio calculation circuit calculates a signal intensity ratio among the first three primary color signals, matrix coefficients of the second color separation section are changed based on the calculated signal intensity ratio and the second color separation section converts the first luminance signal and the second color difference signal to the second three primary color signals.

Abstract: A light source unit, which is connected to a control unit and an endoscope, radiates a pre-determined light quantity of white light based on a signal from the control unit. The light source unit includes a lamp as a white light source, an infrared cut filter, a light quantity limiting filter, being inserted/removed on an optical path, for limiting light quantity in a pre-determined wavelength region of white light, a filter insertion/removal driving unit for inserting/removing the light quantity limiting filter on an optical path, and a condensing lens for outputting white light. For example, when a transmission rate of a blue band is 100%, the light quantity limiting filter limits transmission rates of other bands to 50%. This improves S/N in discrete spectral image generation with illumination light in a visible light region.

Abstract: An endoscope apparatus includes a light source apparatus, and a light-adjusting circuit. The light-adjusting circuit, based on a first image signal with a first wavelength band having a peak wavelength of a spectral characteristic and a second image signal with a second wavelength band having a peak wavelength of a spectral characteristic providing a value lower than that of the first image signal in the absorption characteristic and providing a suppressed scattering characteristic of the body tissue between a wavelength band providing a maximal value and a wavelength band for a minimal value in an absorption characteristic of a body tissue of a subject, provides a weight larger than that of the second image signal to the first image signal to calculate a light adjustment signal for adjusting a light amount in a light source apparatus and outputs the light adjustment signal.

Abstract: An image generating apparatus according to the present invention includes: a first light source unit that emits light in a first wavelength band to a subject; a second light source unit that emits light in a second wavelength band, which is a part of the first wavelength band, to the subject; an image pickup unit that picks up an image of the subject and outputs the image as an image pickup signal; a light cut filter unit that cuts light in the second wavelength band reflected from the subject; and a complementary processing unit that applies complementary processing to a component equivalent to the second wavelength band cut by the light cut filter unit in the image of the subject picked up by the image pickup unit in a state in which the subject is illuminated by the light in the first wavelength band.

Abstract: In an endoscope apparatus of the present invention, while observing a body cavity tissue under narrowband light via a second filter group of a rotating filter, a G2 filter section, B2 filter section, and shading filter section change illumination light to narrowband surface-sequential light of two bands of discrete spectral characteristics, and an image-capturing signal captured by a CCD via the B filter section constitutes a band image having superficial layer tissue information, and an image-capturing signal captured by a CCD via the G filter section constitutes a band image having intermediate layer tissue information. This produces tissue information of a desired depth in the vicinity of a superficial portion of a mucous membrane using an inexpensive and simple configuration.

Abstract: An endoscopic device of the present invention comprises: an endoscope having an image pickup unit that outputs a picked up an image of a subject as an image pickup signal; an image pickup signal amplification unit; a light source unit; a light intensity control unit that controls an amount of light; a spectral unit that penetrates light in a band based on predetermined characteristics; a brightness control unit that controls a brightness of an image displayed on a display unit; and a mode switching unit that switches a first mode for emitting first illumination light and a second mode for emitting second illumination light having a band narrower than the first illumination light, wherein the brightness control unit controls the light intensity control unit and then controls the image pickup signal amplification unit in the second mode.

Abstract: In a method of reducing corrosion of a material constituting a nuclear reactor structure, an electrochemical corrosion potential is controlled by injecting a solution or a suspension containing a substance generating an excitation current by an action of at least one of radiation, light, and heat existing in a nuclear reactor, or a metal or a metallic compound forming the substance generating the excitation current under the condition in the nuclear reactor to allow the substance generating the excitation current to adhere to the surface of the nuclear reactor structural material, and by injecting hydrogen in cooling water of the nuclear reactor while controlling the hydrogen concentration in a feed water.

Abstract: A reduced size vacuum die-casting machine wherein an amount of powder release agent which is fed to a mold cavity each time is stable and loss of velocity of the air flow for sucking out the powder release agent is difficult, the apparatus provided with a powder control valve which has a powder release agent passage through which a powder release agent passes and which moves back and forth inside of a sleeve to switch between a state communicating a discharge hole with a molten metal holding chamber and a state communicating a discharge hole with a powder release agent passage, the powder release agent passage of the powder control valve formed inside of the powder control valve, the inlet and outlet of the powder release agent passage being formed at the outer surface of the powder control valve.

Abstract: In a nuclear power plant, a corrosion-resistant oxide film on a surface of the metal component of a reactor structure is exposed to a high-temperature water, the corrosion-resistant oxide film containing an oxide having a property of a P-type semiconductor, and a catalytic substance having a property of an N-type semiconductor is deposited on the oxide film. The oxide film maintains the property of the P-type semiconductor.